Zw27K-12 Outdoor Hv AC Vacuum Circuit Breaker Type Sectionalizer

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: ZW27K-12
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Air
• Installation: Fixed
• Structure: ACB
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection
• Certification: ISO9001-2000
• Rated Voltage: 12/24kv
• Rated Current: 630A
• Mechanical Life: 10000
• Rated Short-Time Withstand Current: 20ka
• Transport Package: Wooden Box
• Specification: Custmer made
• Trademark: ZGHQDL
• Origin: China
• HS Code: 8535210000
• Production Capacity: 3000/M

Product Description

ZW27K-12 outdoor HV AC vacuum circuit breaker type sectionalizer is a kind of user sectionalized switch which is independently

researched and developped by our company. It is composed of two main parts of switch body and fault detection controller. These two

parts are electrically connected together by aerial sockets and outdoor sealed control cables. The switch has the remote management

mode, and has the functions of protection & control and communication.It can reliably judge and detect MAlevel zero sequence current

in or out boundary and short-circuit fault current between phases to remove automatically the single-phase grounding fault and short-

circuit fault between phases. The product conforms to the standards of IEC62271-100 & GB1984: AC high voltage circuit breaker,

IEC60694 & GB/T11022: HV general technical requirement of switch and control apparatus.

No.	Item			Unit	Data
1	Rated voltage			kV	12
2	Rated current			A	630
3	Rated insulation levle	1min P.F withstand voltage	Dry test	kV	42
			Wet test (to earth, external insulation)		34
		Lightning impulse withstand voltage(peak)			75
4	Rated frequency			Hz	50/60
5	Rated short-circuit breaking current			kA	20
6	Rated operating sequence				O-0.3s-CO-180s-CO
7	Breaking times of rated short-circuit breaking current			times	30
8	Rated short-circuit making current (peak)			kA	50
9	Rated peak withstand current				50
10	Rated short-time withstand current				20
11	Rated short-circuit duration			s	4
12	Rated operating voltage /rated auxiliary loop voltage			V	AC/DC220
13	Average opening speed			m/s	1.0±0.3
14	Average closing speed				1.0±0.25
15	Contact close-bouncing time			ms	≤2
16	Three-phase opening non-simultaneity				≤2
17	Closing time			ms	25~50
18	Opening time	At highest rated operating voltage			15~50
		At lowest rated operating voltage			30~16
19	DC resistance for each phase loop			µΩ	≤120(200 with isolator)
20	Phase-to-phase spacing(measure from arc chamber's end)			mm	260±2.0
21	Mechanical life			times	10000
22	Net weight			kg	135(155 with isolator)